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Effect of Roasting Time and Cryogenic Milling on the Physicochemical Characteristics of Dried Ginseng Powder

机译:焙烧时间和低温研磨对人参干粉理化特性的影响

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摘要

This study aimed to evaluate the effect of reduced particle size of ginseng by roasting and cryogenic milling on increasing its water solubility and physiological activity. The samples were roasted for different times (9–21 min) and generated in different sizes (10–50, and >50 μm). All roasted samples revealed significantly smaller particle sizes than did non-roasted samples, based on Sauter mean diameter (D [3,2], < 0.05). Furthermore, the particle sizes of roasted samples decreased until roasting up to 15 min. In terms of the water solubility index (WSI), antioxidant activity, total polyphenol content (TPC), and total polysaccharides according to particle size, 10–20 μm-sized samples showed the highest values when compared with >50 μm-sized samples. Based on roasting time, WSI values of all samples roasted for up to 15 min were higher than those of the control (not roasted) ( < 0.05). Antioxidant activity and TPC also increased with increasing roasting time. Total polysaccharide content was the highest upon roasting for 15 min, except for the 10–20 μm sample. Ginsenoside content of roasted samples >20 μm size was higher than that of the control (not roasted) except after 15 min of roasting. Therefore, roasting and cryogenic milling are effective in producing ginseng root powder.
机译:这项研究旨在评估通过焙烧和低温研磨降低人参粒径对其增加水溶性和生理活性的影响。将样品烘焙不同的时间(9-21分钟),并生成不同的尺寸(10-50,> 50μm)。基于Sauter平均直径(D [3,2],<0.05),所有焙烤样品的粒径均显着小于未焙烤样品。此外,焙烤样品的粒度减小,直到焙烤长达15分钟。在水溶性指数(WSI),抗氧化活性,总多酚含量(TPC)和总多糖(根据粒径)方面,与大于50μm的样品相比,10–20μm的样品显示最高值。根据烘烤时间,所有烘烤长达15分钟的样品的WSI值均高于对照(未烘烤)的WSI值(<0.05)。随着烘烤时间的增加,抗氧化活性和TPC也增加。除10–20μm样品外,烘烤15分钟时总多糖含量最高。尺寸大于20μm的焙烤样品中的人参皂甙含量高于对照(未焙烤)的人参皂苷含量,但焙烤15分钟后除外。因此,焙烧和低温研磨在生产人参根粉中是有效的。

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